A timberclad warship is a kind of mid 19th century river gunboat.
Design They were based upon a similar design as ironclad warships but had timber in place of iron to act as ablative armour.
See also Cottonclad warship Battle of Fort Henry USS Conestoga (1861) USS Essex (1856) USS Lexington (1861) USS Tyler (1857)
References
Further reading
External links Civil War Warship Types Federal Warships in Tennessee